Description
Deserialization of untrusted data in Microsoft Exchange Server allows an authorized attacker to deny service over a network.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Microsoft | Microsoft Exchange Server 2016 Cumulative Update 23 | 15.01.0.0 – < 15.01.2507.072 | 15.01.2507.072 |
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 14 | 15.02.0.0 – < 15.02.1544.044 | 15.02.1544.044 |
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 15 | 15.02.0.0 – < 15.02.1748.049 | 15.02.1748.049 |
| Microsoft | Microsoft Exchange Server Subscription Edition RTM | 15.02.0.0 – < 15.02.2562.046 | 15.02.2562.046 |
Advisories 4
- WID-SEC-2026-2756 Microsoft Windows Produkte: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 30, 2026
- WID-SEC-2026-2784 Microsoft Exchange Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 31, 2026
- NCSC-2026-0289 Kwetsbaarheden verholpen in Microsoft Exchange server NCSC-NL (Netherlands) · Aug 28, 2026
- MSRC-CVE-2026-62912 Microsoft Exchange Server Denial of Service Vulnerability Microsoft Security Response Center · Aug 11, 2026
References
- Microsoft Exchange Server Denial of Service Vulnerability vendor-advisory patch